To find the volume of an objects like a cube or a box, measure the length × width × height. If measured in centimeters, the answer will be in cubic centimeters (cm³). Mass is measured in grams. The ...

Density is a measure of how much mass an object has per unit volume. Density is a compound measure because mass and volume can’t be measured in the same units. Objects denser than water sink ...

The same mass takes up a bigger volume - this means the gas is less dense. Density also depends on the material. A piece of iron with the same dimensions as a piece of aluminium will be heavier ...